The mineralogical

petrochemical characteristics and geochemical features of Yuerya batholith

Huluyu batholith and Sandaowan batholith in Eastern Hebei Province

are studied. The results show that they are all the partial remelting products of the Archean basement rocks Qianxi group

which is composed of metamorphic basic-intermediate volcano sedimentary rocks (belonging to the lower crust)

between the A type covergence in the plate.So the genetic type is the anatexis of the lower crust.We also point out the granite of this genetic type is important in the North China plate. It mainly presents Ⅰ type characteristics. However with the increase of composition of metasedimentary rock in the formed magma

it also presents some S type chracteristics.